Patent application number | Description | Published |
20080225173 | SIGNAL PROCESSING APPARATUS - A signal processing apparatus capable of efficiently processing bitstream in a small circuit scale includes an input buffer in which a bitstream is stored, a first processor which generates a program for processing a signal B corresponding to a signal A by taking out the signal A from the bitstream stored in the input buffer and by using at least one related signal included in the signal A, the related signal being related to the signal B; and a second processor which acquires the program generated by the first processor and executes the acquired program to process the signal B corresponding to the signal A. | 09-18-2008 |
20090122182 | SIGNAL PROCESSING DEVICE - A signal processing device ( | 05-14-2009 |
20090207775 | SIGNAL PROCESSING APPARATUS - When a coded signal having a layer structure is generated, insertion of header information in a sub-layer in each frame increases the bit rate. In contrast, when the header information is only inserted at regular intervals, a reproducer sometimes cannot obtain information necessary in a reproduction start point. | 08-20-2009 |
20090240503 | ACOUSTIC SIGNAL PROCESSING APPARATUS AND ACOUSTIC SIGNAL PROCESSING METHOD - To provide an acoustic signal processing apparatus which can reduce the amount of calculation in matrix arithmetic. | 09-24-2009 |
20090262949 | MULTI-CHANNEL ACOUSTIC SIGNAL PROCESSING DEVICE - Provided is a multi-channel acoustic signal processing device by which loads of arithmetic operations are reduced. The multi-channel acoustic signal processing device ( | 10-22-2009 |
20100235171 | AUDIO DECODER - Provided is an audio decoder which can reduce an amount of arithmetic operations while suppressing occurrence of aliasing noise. The audio decoder includes: a decoder ( | 09-16-2010 |
20110179227 | CACHE MEMORY AND METHOD FOR CACHE ENTRY REPLACEMENT BASED ON MODIFIED ACCESS ORDER - A cache memory and method for controlling the cache memory. The cache memory selects, from an access address, a unique set from among a plurality of sets, each access set including a plurality of cache entries. Each cache entry holds unit data for caching. The cache memory holds, for each of the cache entries, order data that indicates an access order of the cache entries in each set, and replaces a cache entry that is oldest in the access order. The cache memory modifies the order data regardless of an actual access order, and selects, based on the modified order data, a cache entry to be replaced. | 07-21-2011 |
20110316996 | CAMERA-EQUIPPED LOUDSPEAKER, SIGNAL PROCESSOR, AND AV SYSTEM - An AV system includes a camera-equipped loudspeaker provided with a camera. The camera is united with a loudspeaker body, and captures an image in a direction in which the loudspeaker body outputs a sound. The recognition unit recognizes a location of a listener from an image of the camera, and detects an orientation of the loudspeaker body relative to the listener. The sound control unit performs signal processing on a given sound signal for generating an output signal, and outputs the output signal as an acoustic signal to the loudspeaker body. | 12-29-2011 |
20120005562 | ENCODED STREAM DECODING DEVICE - In an encoded stream decoding device, a storage amount checking circuit confirms that a sufficient amount of stream has been stored in a buffer circuit. Thereafter, a control circuit starts repeatedly outputting a control signal to a decoding circuit to instruct the decoding circuit to perform a variable-length decoding process. If, by iterating the decoding process, the total amount of a consumed stream in the buffer circuit | 01-05-2012 |
20120039397 | DIGITAL SIGNAL REPRODUCTION DEVICE AND DIGITAL SIGNAL COMPRESSION DEVICE - A digital signal reproduction device includes an audio decoder configured to decode an audio bit stream to output a resulting audio signal, an audio bit stream analyzer configured to analyze whether or not the audio bit stream contains human voice, a playback speed determiner configured to determine a playback speed based on a result of the analysis by the audio bit stream analyzer, and a variable speed reproducer configured to receive the audio signal and reproduce an audio signal corresponding to the playback speed determined by the playback speed determiner. | 02-16-2012 |
20120185241 | AUDIO DECODING APPARATUS, AUDIO CODING APPARATUS, AND SYSTEM COMPRISING THE APPARATUSES - An audio decoding apparatus comprises: a plurality of decoding units; a band replicating unit which processes a decoded signal obtained when a corresponding decoding unit decodes a coded signal, according to a scheme specified by transmitted information; and an information transmitting unit which transmits, to a signal processing unit, information identifying the corresponding decoding unit from among the plurality of decoding units. | 07-19-2012 |
20120323583 | COMMUNICATION TERMINAL AND COMMUNICATION METHOD - A communication terminal includes: a decoder which decodes an input bitstream received from another communication terminal, to generate an output audio signal and outputs the generated output audio signal to a speaker; an echo canceller which obtains an input audio signal representing sound captured by a microphone placed in a space to which the speaker outputs the sound, and removes, for respective subbands, an echo component included in the obtained input audio signal and corresponding to the output audio signal, to generate an audio signal for transmission; an encoder which codes the audio signal for transmission to generate an output bitstream and transmits the generated output bitstream to another communication terminal; and a control unit which controls, for the respective subbands, echo cancellation processing according to a reproduction band of at least one of the output audio signal and the audio signal for transmission. | 12-20-2012 |
20130144631 | AUDIO SIGNAL PROCESSING APPARATUS AND AUDIO SIGNAL PROCESSING METHOD - An audio signal processing apparatus that processes a bit stream generated by coding an audio signal on a frame-by-frame basis, the bit stream including, for each frame, coded data representing the audio signal, additional data and attribute information, the audio signal processing apparatus including a decoding unit configured to decode the coded data to generate a decoded signal, a processing unit configured to process the decoded signal, a detection unit configured to detect whether or not there has been a change in the attribute information, and a storage unit, wherein the processing unit is configured to, when the change is not detected, process the decoded signal by using at least two pieces of additional data stored, and when the change is detected, process the decoded signal by using only either additional data before detection of the change or additional data after detection of the change. | 06-06-2013 |
20140072118 | TRANSCEIVER - A transceiver includes: a TV signal receiving unit for generating a first audio signal from a received broadcast wave; a decoder for decoding a reception signal received from the transceiver, to generate a second audio signal; an adding unit for transmitting the second audio signal to a speaker or adding up and transmit, to the speaker, the first audio signal and the second audio signal, and for outputting a reference signal; and an echo canceller for estimating a pseudo echo component from the reference signal, and cancels the pseudo echo component in a picked-up signal picked up by microphone a sound outputted from the speaker. The adding unit, when the TV signal receiving unit receives the broadcast wave, adds and transmits, to the speaker, the first audio signal and the second audio signal, and outputs a signal resulting from the addition as the reference signal to the echo canceller. | 03-13-2014 |